Drying apparatus.



{1. W. HOTTMANN.

DRYiNG APPARATUS.

APPLICATION HLED DEC.8.1917.

2 SHEETSSHEET I.

l lllill C. W HOTTMANN.

DRYING APPARATUS.

APPLICATION FILED 056.8; \317- A 1 392, 1 65 I Patented Apr. 29, 1919.

2 SHEETS-$HEET 2.

ulllllil MT sins ATENT CHARLES W. HOTTMANN, OF PHILADELPHIA, PENNSYLVANIA.

DRYING APPARATUS.

To all whom it may concern Be it known that 1, CHARLES W. Horn MANN, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Drying Apparatus, of which the following is a specification.

My present invention relates to a drying apparatus which while not limited to such use is especially adapted to be employed to effect the removal of the and meat scraps so that such material will be in proper condition to be placed in the oil press in order that the oil can be recovered from material of this character.

In devices heretofore employed for this purpose, it has been customary to arrange a steam jacket exteriorly of the container in which the material is placed, the result of which is that not only is a very large amount of heat lost due to radiation, but the portions of the material farthest removed from the action of the steam do not have sufficient moisture removed therefrom. It is also uncomfortable for the workmen to actuate machines constructed in this manner due to the intense heat which radiates into the room. ft is a purpose of my present invention to devise a novel construction and arrangement of a drying apparatus which will utilize a minimum amount of the drying agent, such as for example, steam or hot air, and which will enable one to remove uniformly from the mass of material the water which is present.

With the above in view, my invention in its broad and generic scope comprises a plurality of cylinders or their equivalents, between which is formed a chamber to receive the material to be dried or treated, while the inner cylinder is provid'ed with means to cause a circulation therethrough of any desired type of fluid.

It further consists of a novel construction and arrangement of cylinders. a novel manner of supportingthem, and a novel con struction for eflecting the removal of any gases which may be present in the chamber in which the material is placed.

It further consists of a novel construction and arrangement of a plurality of cylinders having baflies disposed therein and novel means to cause said cylinders to rotate in unison.

Other novel features of construction and advantage will hereinafter more clearly ap- Specification of Letters Patent.

Application filed December 8, 1917.

moisture from fat Patented a t. as, rare. Serial No. 206,344.

pear in the detailed description of the invention.

For the purpose of illustrating my invention, I have shown in the accompanying drawings a typical embodiment of it which is at present preferred by me, since this embodiment will give in practice satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and de' scribed.

Figure 1 represents, in side elevation, a drying apparatus embodying my invention.

Fig. 2 represents a section on line 22 of Fig. 3. i

Fig. 3 represents an end elevation of my device.

Fig. 4 represents a section on line 4-4 of Fig. 1.

Similar numerals of reference indicate corresponding parts.

Referring to the drawings 1 designates foundation parts which are in the form of cradles or blocks which are provided with oppositely disposed rollers 2 which engage the bands or bearing rings 3, which latter carry the gears 4. The gears 4: are in mesh with the driving pinions 5 fixed to a-shaft 6 journaled in the foundation parts 1. The driving shaft 6 is provided with a pulley 7 in order to adapt it to be connected with any desired driving motor or source of power. The bearing rings 3 are fixed to an outer cylinder 8, the ends of which extend rOVGl the flanged rings 9 which are provided with a series of ports 10 opening laterally through the rings and the arrangement of which will be best understood by reference to Fig. 4. The outer periphery of the member 9 is recessed to form a shoulder 11, with which the juxtaposed end of the cylinder 8 contacts.

- 12 designates an inner cylinder which forms with the outer cylinder 8 a chamber 13 to receive the material which is to be treated. The inner cylinder 12 forms a chamber 14 to receive the agent, or medium which is to be employed, such as for example,

anydesired manner to the inner periphery of the cylinder .12.

16 designates stuflin'g boxes and through one of these stuffing boxes extends an inlet pipe 17 which serves as a means to introduce the drying medium, for example, into the chamber 14. This inlet pipe 17 is provided with a controlling valve 18 and is carried by.

a bracket 19 secured to an end plate 20, which latter is provided with the supporting standards 21. An end plate is employed at each end of the machine and these plates are connected by stay rods Each end plate 20 is provided preferably at its upper end with a discharge passage 23, as will be readily understood by reference to the figures of the drawings.

It will be seen that when a port 10 has been moved into the position of the upper ports 10, seen in Fig. 2, the upper portion of the chamber 13 is in communication with the discharge passage 23, so that any or fumes may freely pass from the chamber 13. The stufiing box 16 at the discharge end of the chamber 1% is provided with a discharge conduit 24; carried by a bracket 19 and extending through the stufling box 16 and its inner end is downwardly deflected as at 25 sothat it will terminate in .proximity to the lower end of the chamber 14:. so that any water condensed in-the chamber 1& will be carried away through the conduit 24. The outer periphery of the inner cylinder 12 is provided with a desired number of longitudinally extending bafiie plates 26, see Figs. 2 and 4, and the inner periphery of the outer cylinder 8 is provided with a desired number of longitudinally extending baffle plates 27. These baffle plates can be arranged in different ways, but I have preferred to show the bafiie plates 27 disposed between two of the battle plates 26. The outer cylinder or drum 8 is provided with a desired number of openings 28 which are controlled by doors 29, which as illustrated are hinged to the outer cylinder. For convenience of illustration, these doors have been shown in line with each other, but it is to be understood that it is within the scope of my invention to locate these doors in any desired position or positions on the cylinder 8.

In the operation of my invention, the driv mg shaft 6 is caused to'revolve in any desired manner, and the pinions 5 inter i'i'ie'shing with the gears 4 cause the cylinder 8 to revolveand as this cylinder 8 is connected to the inner cylinder 12, these two cylinders rotate in unison. It will be understood that prior to the revolution of the 'driVingshaft 6, the material has been placed intothe chamber 13 through the openings28 and the doors 29 closed and secured in any desired manner. The valve 18 is opened and the steam or other medium passes through the inlet pipe 17 into the chamber 1'45 and is withdrawn together with any water of condensation through the conduit 24:. The fat containing meat within the chamber 13 is carried around with the drums due to the provision of the b'aflies and as portions of it are moved up wardly toward the top of the chamber 13, such portions slide backwardly toward the bottom. of-the chamber and are heated due to the heat radiating through the inner cylinder. By such construction, the water contained in the material is removed and passes ofl in. the form of vapor through the ports 10, when such ports are in register with the discharge ports 23. After the material has been dried in this manner, the driving shaft is stopped and the material is removed through the openings 28 for further treatment. 1

Assuming that the material as-described has been acted upon, it is placed in an oil press and the oil removed, it is then returned to the chamber 13 for further drying and is then again pressed to remove any remaining oil.

In accordance with my present invention,

the medium introduced through the pipe 17 passes into an inner cylinder so that a minimum-amount of medium is necessary to produce the desired results.

It will now be apparent that I have deviseda novel and useful drying apparatus, which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described a typical embodiment of it which will give in practice satisfactory and reliable results, it is to be understood that this embodiment is susceptible of modification in various particulars without departing from the spirit or scopeof theinvention or sacrificing any of its advantages.

Having thus describedmy invention, what I claim as new and desire to secure by Letters Patent, is

1. In a drying apparatus, in combination, anti-friction devices, an outer cylinder supported on said anti-friction devices, an inner cylinder connected with said outer cylinder and forming therewith a chamber to receive material, end members closing the ends of said chamber and provided with a series of ports, a stationary member having discharge passages with which said ports are brought into register during the revolution of said cylinders, means to revolve said cylinders, and means topass fluid through said inner cylinder.

2. In a drying apparatus, in combination, an outer cylinder, gears thereon, a driving shaft intergeared with said gears to rotate said cylinder, an inner cylinder, end members cooperating with said cylinders to form a: chamber therebetween and provided with ports, stationary members-having discharge passages with which said ports are brought into register during the revolution of said cylinders, means to close the ends of said inner cylinder, and means to pass a fluid through said inner cylinder.

3. In a drying apparatus, in combination, an inner and an outer cylinder, end members connecting said cylinders to form a chamber and provided with ports, closures for the ends of said inner cylinder, an inlet pipe ex tending through one of said closures and discharging into said inner cylinder, an outlet pipe extending through the other of said 010- sures into said inner cylinder, means to close 1 said ports except when they are at a predetermined position, and means to revolve said cylinders.

4-. In a drying apparatus, an inner and an outer cylinder forming between them a chamher to receive the material, means to close the ends of said cylinder, means to introduce a drying means into said inner cylinder, the closing means for said outer cylinder having ports therethrough and stationary means having ports to communicate with the ports in said closing means during the revolution of said cylinders, and means to revolve said cylinders.

5. In a drying apparatus, an inner and an outer cylinder having a chamber between Copies of this patent may be obtained for five cents each, by addressing the them to receive the material, closures for the ends of said inner cylinder, means to pass a drying medium into said inner cylinder, closures for said chamber, each of which is provided with a discharge port, means to permit the fumes from said chamber to exhaust from said discharge ports when the latter are in a predetermined position, and means to simultaneously revolve said cylinders.

6. In a drying apparatus, an inner and an outer cylinder spaced from each other to form therebetween a chamber to receive the material, longitudinally extending bafiles carried by said inner cylinder and extending outwardly therefrom, longitudinally extending baffles carried by said outer cylinder and extending into said chamber, flanged rings connected with said inner and outer cylinders and having ports communicating with said chamber, means at the end of said chamber to communicate with said ports, means to pass a drying medium into said inner cylinder, and means to revolve said cylinders.

CHARLES W. HOTTMANN.

Witnesses:

H. S. FAIRBANKS, C. D. MCVAY.

Commissioner of Patents,

Washington, JD. 0. 

